This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.
She will pick the best candidates from Jack's network
The next step is to speak to Jack.
Job Title: Senior Multidisciplinary Engineer
Salary: $150k-$250k + Equity
Company Description: Unlimited - a16z-backed AI-native infrastructure startup
Job Description:
Join a high-octane team reinventing how the physical world is built. You will leverage deep engineering expertise and AI tools to automate complex infrastructure design—data centers, power plants, and mining facilities. This role is for hands-on builders who want to compress months-long pre-construction timelines into weeks and revolutionize global industrial construction.
Location: San Francisco, USA
Why this role is remarkable:
Join a founding team backed by $12M from Andreessen Horowitz and CIV, working on massive real-world projects valued at nearly half a billion dollars.
Influence the development of an AI-native engineering platform that generates tens of thousands of design configurations to optimize cost and performance 10x faster than incumbents.
Work in an ""Elon-style"" high-intensity environment with relocation support to San Francisco and a focus on shipping hard, physical infrastructure at scale.
What you will do:
Use domain expertise across mechanical, electrical, and systems engineering to build AI-driven automation workflows for complex infrastructure design.
Collaborate across disciplines to define physics-based constraints and trade-offs, ensuring generated designs are safe, performant, and ready for construction.
Iterate rapidly on real-world engineering products, moving from concept to shippable design while working directly with a vertically integrated construction team.
The ideal candidate:
7-15 years of experience shipping complex physical products at elite companies like Tesla, SpaceX, Anduril, Rivian, or Neuralink.
A multidisciplinary mindset with the ability to think across the full stack (mechanical, electrical, systems) rather than working in a siloed specialty.
Hands-on builder mentality with a track record of sticking with hard projects through testing and iteration; no project managers or consultants.
Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.
We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
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What We Do
Jack & Jill AI is an AI-powered recruiting platform that automates the job search process, offering assistance with applications, interview preparation, and job matching. It also helps companies find suitable candidates.
